Museum workers are unionizing at much higher rates than before. There are more than 40 museums that have unions in the United States, now including the New Museum in New York City. It seems that workers are engaging in unionization in order to achieve higher wages. This trend is interesting because museum workers are well educated and individuals who partake in their type of labor usually do not engage in collective activity.
See "Museum Workers Draw Up Union Contracts to Combat Low Pay", Paige Smith & Andrew Wallender, Bloomberg Law, January 25, 2019